A big thanks to lyndonguitar, silkstone, & xxdozer322, to those that donated.
We have some left over Metro 2033 keys to give out, looks like 4 or 5 keys (...depending on whether or not I kept track well )

All Codes Gone

Takers:

Mussels

bogmali

happita

THE_EGG

Liquid Cool

Nokiacrazi

caleb

So this is first come, first serve. Post and you shall receive. I will update the OP as codes are given out and when they are gone

Well, the action scenes in which hordes of mutants attck it is not possible, neither the level "Biomass" or the few minutes before that level begins. Neither in the level "Tower" or the prologue. In all other parts it is possible AFAIK.

Edit: I do not take part in the giveaway because I already own the game (I wouldn't know whom to gift it to).